Attachment plug receptacle



May 10, 1932. CLEMENCE 1,858,072

ATTACHMENT PLUG RECEPTACLE Filed June 25. 1927 INVENTOR EZZzIoZZlemence,

. ATTORNEY v Patented May 10, 1932 UNITED s'rA'r-ss PATENT .orr caELIOT! omen. 01' m YORK, I. Y; M19110], 3'! ml IO m IOHOWAT'I' ELECTRICCORPORATION. .01

roan-Ion or conmrcor 33111032031. comm-rice '1, A 008- arracnxmtr raveancnrrscm Application am June a, 1m. mm 'I'o. aouoe device. the metallicconducting parts thereof as well as the metallic attachment. arts not incircuit are duplicates,thereby h ving the die work necessary forstriking up the metallic portions used.

Other advantages of'my device are that,

owing to the location (if the contact recesses for receiving the metal.parts of opposite polarity, these particular members are widely spaced,insuring absolute insulation, and at the same time are located toreceive the standard connector plugs now in use.

A further advantage is in the arrangement of the recesses in the maininsulator body, wherein said recesses are all open from the top of thebody, with no openings at the rear thereof.

Another advantage of m deviceis that the parts of the receptacle a andeasily assemb ed, are fixedly held in asgab sembled condition by thesimple operation of fastening two cover plates, with a single fasteningmeans for each plate, whichin addltion to lockin the assembly also ocks'up receptacleattac 'ng straps in a rigid and suitable manner. I

These and other capabilities will be ascertained as the descriptionproceeds, and 11'. is obvious that structural modifications may be madein the details of my receptacle without departing from the spiritthereof or the scope of the ap nded claims.

In the rawings:

.Fig. 1 is a plan view of my'device.

Fig. 2 is a side view thereof.

Fig. 3 is a plan view with the plug receiving cover plates removed.

Fig. 4 is a lan view of the main recessed receptacle y with all assemblyremoved.

Fig. 5 is a sectional view taken on the line 5--5, Fig. 4, looking inthe direction of the arrows.

r being quickly Fig. 6 is a sectional view 6-6, Fig. 3. r

Fig-7 is a combined view of the plug receiving cover plateshowing thebottom and end view thereof. 1

Fig. 8 is a combined view of 'one of the duplicate contact membersinside, plan and en elevation.

While certain featuresof the present invent on are adapted for use insingle flush receptacles, the invention is for convenience taken on theline illustrated as applied to 'a'duplex flush rece tacle. The parts areall carried by an insu sitingl body 1, which may be made of porcelain,obmolded or other insulating material. The base for the duplexreceptacle is shaped to have two substantially cylindrical end sections2 and 3, and two centrally disposed 'laterallyeextending lugs 30. Thefront face 4 of t base is provided with a number of recesses. As. hereshown,-these recesses are in pairs; 5 and 6 adapted to receive contactmembers, and 7 and 8 adapted to receive supporti'n straps. Theinsulating body is also provi ed with key receiving recesses 18. f

In the molding of these bodies there is also provided a series of bushinone of which 9, is a centrally located bushing threaded and embedded andmolded into the material as shown in Fig. 5. In addition thereto, thereare also provided at substantially the center of the cylindrical members2, and 3 two upstanding pins or thimbles l0 and 11 provided with a thinupstanding cylindrical portion adapted to be either spun over in theform of a hollow rivet or threaded to receive a screw.

The other insulating parts. of the duplex receptacle may consist ofcover caps or plates 14, preferably made out of molded material. Thesecovers are provided with blade receiving slots 15, spaced to receive theblades of attachment plugs, and also with central holes when the partsare assembled.

One of the conducting members, suitable for a duplex receptacle having abase of the type .above described, is shown in detail in Figure 8.Figure 3 shows the assembly of these conductin members in the insulatingbase. These con ucting members 19 are alike,

and each is made from a flat blank of suitable resilient metal such' asmanganese bronze, the

stamping being bent to suitable form to provide on opposite ends a pairof folded over spring contacts 20. These spring contacts may be providedwith the usual indentation or teat 21. The contact member 19 is alsprovided with a centrally located laterally extending lug 22 to thebottom of which is secured a reinforcing plate 23. The lug and plate arethreaded for a wire receiving screw 24. Portions of the conducting stripare bent as indicated at 25, to provide an offset cenwhat deeper andwider than the remainder.

of the recesses. These recesses conform to the shape of the conductingmembers, and are adapted to receivethe conducting mem-- bers, asindicated in Figures 3 and'6, and

, hold them immovably therein. When the contact members are inserted inplace, the

. offsets 27 rest against the side walls 28 of the recesses 5 and 6, andthe lugs 22 and the conducting members extend outwardlty) to overlie thelugs 30 on the insulating ase These lugs are provided with enlargedblind holes 29 to receive the screws 24.

As a means for attaching the plug receptacleto the usual outlet box,there is also provided a pair of metallic attaching straps 31 which areprovided with the usual enlarged attaching screw-receiving hole 32, ofoblong form, whereby the said device upon installation may be properlyattached to the face of the outlet box in the usual and well knownmanner.

In the present instance the straps 31 are made separate and, as in thecase of the contact member 19, are duplicates and are of such form thatthey are firmly and rigidly received into the shallow conformingrecesses 7 and 8, as indicated in Figs. 2, 3, 4 and 5, and the strapsare further provided with bores 33 whuch suitably register with theupstanding bushings 10' and 11,- so that when the straps are inserted inthe position shown in Fig. 3, they aresubstantial y flush with the topface 4 of the body 1.

assume either by the screws 12 and 13 or by upsetting or riveting theend of the inserts 10 and 11.

The cover members bear on the extensions26 and secure the contacts andattaching strips in place. The receptacle is then ready forinstallation. The connections may be readily made by placing the wiresunder the heads of the screws 24.

From the foregoing description and the drawings it will be ascertainedthat all openings in this device-are from the top .of the body 1, andthat owing to this structure the body -1 is easily molded in a simpletype of mold because'of the fact that the openings are drafted in onedirection for easy withdrawal from the mold.

It will be further ascertained that the assembl of all partsnecessitates the handling of on y six pieces, disregarding the screws,

and that they are all introduced from the top of the structure and thattwo simple fastening means, also on the top, lock the entire assembly inoperative relation, as previously described. a

It will therefore be ascertained that I have designed an attachment plugreceptacle of great simplicity, easy to assemble and therefore ofgreater economy in manufacture, and at the same time have improved thearticle as to obviate the tendency of short-circuits by widelyseparating the operative parts, all

of said parts being. paired and being dupli-- cates, thereby furtherreducing the cost of manufacture through the elimination of extra setsof dies.

It will, of course, be understood that many of the features of theduplexreceptacle above described ma be employed in a single flushreceptacle. lso that various modifications may be made within the scopeof the ap- I pended claims.

Having thus described my invention what I claim is:

1. An attachment plug receptacle comprising an insulator bodyportionprovided with a plurality of recesses from the top thereof,

duplicate circuit contact members and, duplicate receptacle attachingstraps, which are located in said recesses, a pair of cover platesmounted thereover with a single attaching means for each of said coverplates whereby said cover'plates are held in operative POS1-- tion, andlug means on said contact members for engaging thesides of said recessesand "q said cover plates whereby said contac t members are firmly heldin operative position.

2. In an attachment plug receptacle an insulator body receptacleprovided with recesses from the top thereof, a pair of metallic circuitconductin members therein, keyways molded in sai body member anddisposed between said recesses, and a pair of covers for saidreceptacle, each of said covers being provided with a key forcooperating with the keyway to lock said covers 1n operative relation.

3. In an attachment plug receptacle, an insulator member provided with aplurality of recesses therein entering from the top, a

air of said recesses being at the ends of said iiody and adapted toreceive therein opposedly mounted duplicate strap attaching means,another pair of said recesses bein adapted to receive therein duplicateopposing metallic circuit conducting members, said last recesses beingon opposite sides of the said body, and opening to the opposite sidesthereof to provide an outlet for wire attaching means on said conductingmembers, and cover plates fixedly secured to said insulating .memberover said recesses and adapted tosecure therein said attaching means andsaid circuit conducting members.

4. In an attachment plug, aninsulator body provided with receptacleattachment means comprising a pair of oppositely mounted attachmentstraps set in conforming recesses in said body, and insulating coverplates overlying the straps, and metallic attaching pins, one for eachplate, one of said insulating parts being apertured to receive thecorrespondingxpin which is secured to the oppo site part, t e pin beingriveted over to secure the cover plate and the strap overlaid thereby inplace.

5. In an attachment plug receptacle, an insulating body having straprecesses, straps in said recesses, the body having contact receivingrecesses, contacts therein, cover plates having blade receivingopenings, and aligning keys registering with recesses in the bod andmeans for securing the cover plates 1n position on the straps to holdthem in the recesses.

6. An attachment plug receptacle comprisin an insulating base providedwith a lurahty of contact receiving recesses openmg toward the frontface of the base, the re? cesses having lateral o nings, a air ofcontact members conforming to the s ape of the recesses and insertibleinto the recesses from the front face of the base, each contact memberhavin a spring terminal opposite the correspon in spring terminal of theother contact mem r and a wire receiving terminal extending out throughthelateral opening, and an insulating cover plate secured to base, thecover plate having apertures to permit contact blades to pass through toreach the spring terminals, the cover plate and contact members havinco-operative parts to force the contact mem ers to the bottom of therecesses whereby they are immovably heldtherein.

7-. An attachment plug receptacle comprising anmsulating base provided.with a plurality of contact receiving recesses opening toward thefrontface of the base, the recesses having lateral openings, a pair ofcontact members conforming to the shape of the recesses and insertibleinto the recesses from the front face of the base, each contact memberhaving a spring terminal opposite the corresponding spring terminal ofthe other contact member and a wire receiving terminal extending outthrough the lateral opening, and an insulating-cover plate, one of thesaid insulating parts having a metallic attaching pin adapted to passthrough an aperture in the other and be riveted over to secure the twoparts together, the cover plate havin apertures to permit contact bladesto pass t rough to reach the spring terminals, the cover plate andcontact members have cooperative parts to force the contact memberstozthe bottom of the recesses whereby they are immovably held therein.

8. An attachment plug receptacle comprising an insulating base providedwith a plurality of contact receiving recesses opening toward the frontface of the base, the recesseshaving lateral openings, a pair of contactmembers conforming to the shape of the recesses and insertible into therecesses from the front face of the base, each contact member having aspring terminal opposite the corresponding spring terminal of the othercontact member and a wire receiving terminal extending out through thelateral opening, an insulating cover plate secured to base, the coverplate having apertures to permit contact blades to pass through to reachthe spring terminals, the cover plate and contact membershavingco-operative parts to force the contact members to the bottom ofthe recesses whereby they are immovably held therein, the base having arecess in the front face, disposed between the contact receivingrecesses, and an attaching strap fitted therein and held by said coverplate. 7

9. An attachment plug receptacle comprising an' insulating base providedwith a plurality of contact receiving recesses opening toward the frontface of the base, the recesses having lateral openings, a pair ofcontact members conforming to the shape of the recesses and insertibleinto the recesses from the front face of the base, each contact memberhaving a spring terminal opposite the corresponding spring terminal ofthe other contact member and a wire receiving terminal extending outthrough the lateral opening, and an insulating cover plate secured tobase, the cover plate, having apertures to permit contact blades to passthrough to reach the spring terminals, the cover plate 1 and contactmembers having co-operative parts to force the contact members to thebottom of the recesses whereby they are immovably held therein, the basehaving lateral extending supporting lugs underneath the wire receivingterminals.

10. An attachment kplug receptacle comprising an insulating use providedwith a plurality of contact receiving recesses opening toward the frontface of the base, the recesses having lateral openings, a air of contactmembers conforming to the s ape of the recesses and insertible into therecesses from the front face of the base, each contact member having aspring terminal opposite the corresponding spring terminal of the othercontact member and a wire receiving terminal extending out through thelateral opening, and an insulating cover plate secured to base, thecover plate having apertures to permit contact blades to pass through toreach the spring terminals, the cover plate and contact members havingco-operative parts to force the contact members to the bottom of therecesses whereby they are immovably held therein; the cover plate havingan alignment lug adapted to enter a recess in the insulating base toalign the apertures with the spring terminals.

11. In an attachment plug receptacle, a one piece insulating body memberprovided with a plurality of longitudinal recesses entering therein fromthe top, said recesses being adjacent opposite sides of said body andopening centrally through said sides, duplicate opposing metallicconducting members disposed in said recesses and extending through saidside openings to the outside of the body and there provided with wireattachment, means, and cover plates fixedly secured to said body oversaid recesses and adapted to secure said conducting members therein.

Signed at New York, in the county of New York and State of New York,this 24th day of June, A. D. 1927.

ELLIOTT CLEMENCE.

